Winch



Dec. 2, 1924. 1,517,616

, A. cLAYDEN WINCH Filed Dec. 28 1920 I? Sheets-Sheet l Jbl-7 v k f/VV- o L- f'f n a Nl G o dgn 1 All@ ji j Q b H" .,n *a i1 ,0 o I L L @o [C 6 d Dec. 2, 1924. A. CLAYDEN 1,517,616;

WINCH FiledDec. 28, 1920 Sheets-Sheet 2l lINVENTUR .Z//ydelb MToRNEY jv Patented Dec. 2, 1924.

ARTHUR CLAYDEN, OF RICHMOND, ENGLAND.

WINCH.

Application filed December 28, 1920. Serial No. 433,567.

To all 'w from. t may concern Be it known that. I, ARTHUR CLAYDEN, a subject of the Kin of Great Britain and residing at No. 1 led Lion Street, ltichmond, in the county of Surrey, England, have invented certain new and useful Improvements in or Connected with vWinches.l of which the following is a specification.

This invention relates to means or apparatus for lifting or hauling purposes which may be referred to as a winch of the kind in which a single lever or pedal controlsI the clutching and braking operations.

The object of the invention is to provide a construction of winch which will permit ready engagement and disengagement of the power transmitting parts so that the winch can be easily put in or out of action and this is effected by the provision of a combined clutch control and brake mechanism wherein the latter is camactuated and whereby a gradual or a full application or withdrawal of the braking and control actions can take place.

rllhe inventionconsists of a cam-actuation device for the brake mechanism of a winch comprising winding means mounted and geared with a source of power and controlled according to the invention by a combined clutch device and brake mechanism, the latter of whichis characterized by camsactuation and further in which a cam-member has axial movement produced by rotation of the brake shaft. Both devices are operable simultaneously by a common lever to apply the clutch and withdraw the brake or to withdraw the clutch and apply the brake.

The accompanying drawings, illustrate the combined clutch control and cam-actuated brake mechanism according to this invention applied to a single drum winch, but it will be readily understood that the said combined devices may be used in a winch having a plurality of winding drums.

In the drawings Fig. l is a general elevation showing a single drum two gear winch coupled to a prime-mover, and braking on the stationary member of the clutch and provided with a horizontally disposed operating lever.

F ig. 2 is a plan thereof.

Fig. 3 is an end elevation showing the cam-actuated brake mechanism; and Y Fig. d is an enlarged detached view, in detail7 of cam-actuated braking device for putting the brake strap in and out of action.

In carrying the invention into effect a is a cast iron base and standard, webbed and strengthened in those parts where strength is required.

The clutch is of a known type and comprises a movable member It provided with a non-slipping composition around its gripping surface, and a stationary member j the former is preferably made of aluminium, carries a spigot end 7c and is grooved at Z to take the T-pieces of the fork m which comprises a combined fork and lever. actuation member (see Fig. l). The stationary member is preferably of cast iron, lightened by the provision of comparatively large holes and accurately machined on its inner annular face to co-act with the face of the spigot end 7c of the movable member t.

vThe fork member m is fitted to the clutch actuation shaft f to which is connected a bell crank or other lever system n located at the outside of the frame a and to this lever system at the end N1 is attached a control rope or other actuating means. The Stationary member 7' is carried on the shaft (l to which is key-seated a drum o preferably of cast iron taking the load rope.

The movable clutch member 7i is arranged on a sliding key way and a comparatively short longitudinal movement is sufficient to effect engagement of the spigot end of the clutch and vice versa.

The brake strapl p which is shown more clearly in Fig. 4 is of spring steel and is fitted around theI outer rim r of the stationary clutch member j. One end of the band p is secured positively to the boss s, which is a iXed' point, the other end of the band p is fastened to a lug t, against which, face cam al operates to tighten or slacken the frictional Contact of the band upon the rim. The said cam u1 is slidably mounted upon the brake shaft c and is moved longitudinally thereon by the rotary movement of cam u carried on the shaft e which is actuated by the lever system n attached thereto and to the clutch actuation shaft f, so that the clutch and brake control. devices are connectively combined and operable together.

A slot o in a xed bracket has a pin w, slidable therein7 carried by the cam u1, and a spring e upon the shaft e, allows of such movement of the cam u1. The application of the brake puts the spring into compression, and on. taking off the brake the cam u is withdrawnV from vContactv withfjthe' cam al and the recoil of the spring` slides the cam u1 back again to the released position'of--the-'- brake band. L

The actuation upward of the lever u throws the clutch in, through link f2 and lever f1 operating clutch actuation shaft and releases the brake through the shaft c, on this taking place, the winch is ready for work.

The actuation downward of the lever u throws the clutch out andapplies the brake, either fully or gradually as required, the `coactingA cam-facesv lending themselves to a gradual application, and when the clutch is at its intermediate position the operator can through the said' lever, free wheel the winding drum, soi as to permit the load'to reach the desired level. lOnly a. comparatively small movement on the cams is requiredto put the brakingl action on or otl'.

The brake r"action is adjustable by the moving upA or release of a nut B on the brake-shaft e.

Although elements are described and shown herein which are common knowledge in the art, no claim is laid to such broadly, but only when associated with a combined clutch and brake ycontrol in which the 'brake control is cam-actuated.

llVhatfl claim is i l. A brake control device comprising co# acting' cams, one 'of whichv is adjustably andthe other slidably mounted, a brake actuationl shaft on which the said cams are mounted, a lugA against which the slidably mounted cam abuts. an attachment between the said lug 'and the free end of a. band adapted to grip upon a braking surface` a boss forming` a.' fixed pointtof whichthe other end of the band is secured, an attachL l ment between the, said boss and the secured end of thegband, to posltively secure the latter to the boss and mea-ns for operating the bra-ke actuation shaft to apply ori withdraw the brakingaction.

2. A brake control device comprising' coacting, cams. 'a brakeactuation shaft upon which the said cams are vcarried, one adjustably and the other one slidablythereon, a lug against which the slidably mounted cam abuts,y an attachment between the said lug and the free endroit a band adaptedto grip upon al braking surface," a pinlcarried upon-theslidableiA cam member, a slot formed ina fixed bracket within which the said pin is'slidable, al boss'forming` a fixed point to"wh`1ch the-otl'i'er'end of the band is secured, an attachment between the said bossi and the `secured end of the band to positively secure the latter to the boss` and means for-operating the brake actuation shaftt to apply or withdraw the lnfakingr action.l

B. A. brakercontrol device'comprising` Acoactingcams, a brake actuation shaft upon which the said cams are mounted, one adjustably, the other slidably, a pin carried upon the slidable cam member, a slotted bracket in the slot of which the said )in works, a lug against which the slidaily mounted cam abats at one side, a re-action spring against one end of which one side of the said lug` abuts, an attacl'nnent between the said lug" and the free end of a hand aiflapted to grip upon a braking surface` a boss forming a fixed anchorage to which the other end of the band is secured, an at tachment between the, said boss and the secured end of the band to positively secure the lat-ter to the boss, and means for operatingi the brake actuation shaft to apply or withdraw vthe braking action.

4f. A combinedbrake and clutch control, comprising co-acting cams, a brake actuation shaft upon which the said cams are carried, one adjustably`r the other slidably, a lug against which the slidably mounted cam abuts at one side, a reaction spring against one end of which. one side of the said lng abuts` an attachment between the said lug and theV free end of a band adapted to `rip upon a braking` surface, a boss forming a fixed anchorage to which the other end of the band is secured, an attachment between the said boss and the secured end of the band to positively secure the latter to thi` boss, a clutch, a clutch actuation shaft` and a lever system oilieratively connecting the brake actuation shaft with the clutch actuation shaft, so that the two are movable toget-her.

5. A winch havinga combined brake and clutch control comprising co-actingr` cams, a brake actuation shaft carrying the cams, one adjustably, the other slidably, a l.u, r against which the slidable cam is adapted to press when moved by the action of the other cam, a spring' compressed by the nuwement of the slidable cam and reacting?r to return the cam, an attachment between the` said lug and a free end of a brake strap, a braking;r surface upon which the said strap is adapted to grip, a boss forming an anchorage to which the other end of the band is secured` an attachment between the said boss and the secured end of the band to positively hold the latter to the boss, a clutch having* a movable clutch member, a

clutch actuation shaft by which the movable clutch member is caused to engage and disengage the stationary clutch member, and a lever system operatively connecting the brake actuation shaft with the clutch actuation shaft so that the two shafts are operable together.

ln testimony whereof l have signed my name to this specification.

ARTHUR Cl'JAYDlhl. 

